I'm sorry if i'm writing this in a wrong thread, but i have spotted that on winuae64_3300b5 (latest 64-bit beta and at least previous) Realtek 8029 PCI could not open. This is happening only on 64-bit versions. The same config is working properly on 32-bit versions. Debug attached.
PS. Official WinUAE3220 64-bit works ok (on emulated Picasso IV Zorro III).